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PT and Oceans Review
Review for Plate Tectonics and Oceans
Word or Question | Definition or Answer |
---|---|
Boundary type that means "pull apart" | Divergent |
Boundary type that means "push together" | Convergent |
Boundary type that "slides" past each other | Transform |
At what type of boundary would I find a volcanic island chain, like Hawaii? | Convergent- ocean/ocean |
At what type of boundary would I find a volcanic ridge, like the Cascade Range, here in Oregon? | Convergent- ocean/continent |
At what type of boundary would I find a mountain range that grows, such as the Himalayan Mountains? | Convergent- continent/continent |
At which type of boundary might we see a pattern of earthquakes? | Transform |
At which type of boundary might we find volcanoes or a mid-ocean ridge, such as the Ring of Fire? | Divergent |
stress | the forces that push and pull on the earth's crust |
compression | squeeze (push) |
tension | pulling |
shearing | 2 pieces pushed in opposite directions |
strain | the way a rock deforms in response to stress |
brittle | breaking or fracturing |
ductile | flowing like a thick fluid |
elastic | bending or deforming with stress, but will return to its original shape when the stress is released |
faulting | the crack along which rocks move |
folding | a bend in the rock layer |
domes | the uplifted area created by rising magma |
waves | energy that moves across the surface of the water |
tides | the rise and fall of sea level |
currents | the direction of flow of a body of water |
How are waves formed? | Due to the foces exerted by wind on the water surface |
How are tides formed? | Due to the interaction of gravitational forces between the Earth, Sun, and Moon. |
How are Currents formed? | As a result of temperature differences on the ocean surface |
How do waves move? | side to side |
How do tides move? | up and down, changing the depth of the water |
How do currents move? | clockwise in the N. hemisphere, counter-clockwise in the southern hemisphere |